Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Jacob Aaron, MD

Individual provider Internal Medicine Physician · NPI 1407202518

Jacob Aaron, MD is an Internal Medicine in San Francisco, California. Qualified in 2016, 10 years ago. Practices with Mass General Brigham Medical Group Northern Massachusetts Inc, a 819-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California, Massachusetts and Ohio.

Years since qualifying
10
Licensed in
CA, MA, OH
In the registry since
2016
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3555 Cesar Chavez
San Francisco, CA 94110-4403
Phone: (415) 600-6000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 41 Mall Rd, Burlington, MA 01805-4403 — (781) 744-8000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 1013897 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A168040 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35.136980 (OH)
Hospitalist Physician Taxonomy 208M00000X · Licence 1013897 (MA)

Record details

NPI number1407202518
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 6, 2016
Last updated in NPPESMarch 6, 2023
Certification dateMarch 6, 2023
Mailing address1800 Harrison St, 7th Floor, Oakland, CA 94612-3429

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Mass General Brigham Medical Group Northern Massachusetts Inc — 819 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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